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How A Nespresso Machine Works

Nespresso Gran Maestria Cutaway

Nespresso machines are perfect for quick, high-quality espressos but might leave fans of cappuccinos or lattes wanting more, especially the models that don’t have milk frothers. The coffee pods themselves provide the best-tasting preground coffee on the market, but having limited kinds of beans or roasts available might put adventurous drinkers off.

In terms of no-mess, no-fuss coffee, though, Nespresso comes out on top: you’re effectively getting restaurant quality drinks from the press of a single button and a very aesthetically friendly machine.

1.  Insert the pod

Select a flavoured pod for your coffee – the machine will pierce the foil in a gridlike way and then force high-pressure water through the pod. This method extracts the flavoured grounds on the way through.

2.  Heat the water

The heating element inside the machine will kick in, and the water will start to be pumped through it, heading for a specialised needle near the top of the machine to increase the pressure before it passes through the pod.

3.  Add some pressure

Nespresso machines work at only one-to-two bars of atmospheric pressure (less than a typical espresso machine’s eight to-15 times atmospheric pressure). It can achieve using less thanks to a special air compressor.

4.  Pouring the coffee

The now hot and highly pressured water will pass through the pod, like water would in an espresso machine. A hole is pierced in the top of the pod to pass water through, and the filter paper on the ‘lid’ stops any of the grounds from escaping.

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